Scriber.



J. A. KOEHL 6L R. H. ROTHER.

SCRIBER.

APPLIUATION FILED MAR. 7. 191s,

1,081,840, Patented Dee. 16, 1913.

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JAMES A. KOI-IL, OF WASHINGTON, DISTRICT OF COLUMBIA, AND ROBERT H. ROTHER, OF BALTIMORE, MARYLAND; SAID KOEI-IL ASSIGNOR TO SAID ROTI-IER.

SCRIBER.

resisto.

Specification of Letters Patent.

Patented Dec. 16, `1913.

Application filed March 7, 1913. Serial No. 752,689.

To Callco/10m t may concern:

Be it known that we, JAMES A. Kom-n. and Ronnn'r H. Borri-IER, citizens of the United States, residing at Washington and Baltimore, respectively, in the District ot' Columbia and State of Maryland, respectively, have invented new and useful Improvements in Scribers, of which the following is a specification.

Our invention relates to an instrument for inscribing lines upon nthe surfaces ot' paper, wood, metal, 0r any other desired object, and particularly to a device of this character for inscribing parallel lines.

This scriber is adapted to be used conveniently by draftsmen for inscribing faint lines upon the surfaces of drawing paper, which lines will be parallel so as to aid in the execution of lettering wherein capital and small letters are employed. It is to be understood, however, that the device may be applicable to the arts of engraving, woodworking, or the like, and that we do not limit ourselves to the use of the same in any particular art.

The primary object of the invention is to provide an instrument of this character including a body having a handle, and a plurality of marking blades provided on the body and adapted to be arranged so that a single blade, or two or more blades may be rendered operative in use for inseribing a single line, or two or more parallel lines, as desired.

A Yfurther object is to provide a device ot' the class described wherein the blades arelaterally movable and wherein readily adjustable means is provided for varying the distance between active marking points otl the said blades.

A still further object of the invention is the provision of a scriber ot' the character set forth which is simple and neat in construction so as to be inexpensive in manufacture and capable of being used readily and efficiently in practice.

The invention consists in the features ot construction, combination and arrangement of parts, hereinafter fully described and claimed reference being had to the accompanying drawing, in which:

Figure 1 is a perspective view of a scriber constructed in accordance with the invention, showing all of the blades operative; Fig. 2 is a front elevation of the device,

showing a portion thereof in longitudinal section, the movable blade being shown inoperative; Fig. 3 is a side elevation of the device, showing the fixed blades inoperative, the movable blade being in position for inscribing a single line; Fig. t is a fragmentary itront elevation of the same; and Fig. 5 is a front elevation of the device, showing the marking blades in their normal positions.

In the drawing, the numeral l designates the body of the instrument which is provided with a detachable handle 2. As it is not necessary, ordinarily, in using an instrument oit' this nature to employ means for inscribing more than three lines, we have provided a pair of relatively spaced marking blades 3 and 4 upon the body l at the opposite end thereof with respect to the handle 2 and in prolongation of the same, these blades being provided with active marking extremities 5 and G respectively. The blade 3 is normally disposed in outwardly diverging relation to the blade It, as shown particularly in Fig. 5, and is adapted to be sprung inwardly toward the blade LL, due to the fact that the body with which the blades are integrally 'formed is constructed ot resilient metal, such as tempered steel, or the like.

An adjusting member 7 is rotatably mounted within a lateral opening 8 provided medially in the blade 3, with its knurled head 9 in frietional engagement with the outer side face thereof, and extends inwardly therelrom with its threaded portion 10 engaged within the threaded, lateral opening ll provided in the blade -t in alinement with the said opening 8 of the other blade. By means of this adjusting screw, these blades, which may be termed the fixed blades of the instrument, may be flexed toward each other so as to lessen the distance between their active extremities whenever it is desirable to inscribe parallel lines which are in closer proximity to each other than the lines drawn by the said blades when in their normal positions.

The body l is provided on the side thereof opposite to the blade 3 with an inwardly extending projection l2 parallel to both fixed blades, the said projection being provided with a longitudinally extending socket or guide-way 13 opening through its inner end. A movable marking blade 14: has its inner end slidably mounted within the socket 13, and is adapted to be secured in its longitudinally adjusted positions therein by means of the set screw 15, which latter is adjustably mounted within the threaded, lateral opening 16 provided in the body extension 12 in communication with the socket 13.

The movable blade 14 has a pointed marking extremity 17 which is adapted for use in iiiscribiiig lines, and is further provided with a longitudinal slot 18 opening through its side faces and adapted to aline with the longitudinal, threaded bo-re 19 of the adjusting member 7. A second adjusting member 2O extends through the bore 19 of the member 7 and is provided with the medial, enlarged portion 21, which is externally threaded for engagement with the internal threads of the member 7, a knurled head 22 being provided upon one end of the said member 2O exteriorly with respect to the head 9 of the other member. The opposite end of the adjusting member 20v extends through the slot 18 of' the movable marking blade and is provided with an annular flange 23 adjacent the inner face of the said blade for securing a collar 24: mounted upon the adjusting member against the inner face of the said blade. The integral flange 23 provided on the member 2O is formed nearly as large as the threaded portion 21, but is small enough to permit its ready passage through the bore 19 of the co-acting adjusting member 7 during the assembling or detachment of the parts of the device. A second collar 25 is adapted to be positioned upon the protruding end of the member 20 against the outer face of the movable blade for frictional eiigagement therewith in opposed relation to the collar 24e, and the said end of the member 2G is bifurcated as at 26 so that it may be upset for the purpose of securing the collar 25 in applied position. of swivel joint between the adjusting member 2O and the movable blade permits the j we claim is:

said member to be adjusted longitudinally through the bore of the other adjusting 1prismg a body having a handle, a pair of fixed marking blades provided upon said member 7 for the purpose of flexing the movable blade inwardly toward the blade 4 against its tension, when the said movable blade is in any of its longitudinally adjusted positions with respect to the body. As the blade 14 is constructed of resilient metal, it will resist the action of the adjusting member 20 and will tend toward assuining its normal position upon outward adjustment thereof.

llVhen itis desired to use the scriber for making three parallel lines, the set screw 15 is adjusted outwardly so as to release the movable marking blade 14, whereupon the latter is moved longitudinally into a position wherein its active extremity 17 is disposed in transverse alinement withV the active extremities of the fixed blades 3. and 4t,

This form j and the set screw is again operated so as to lock the blade in its new position. Then, the adjusting members 7 and 20 are operated so as to effect the desired spacing of the active extremities of all the marking blades. The blades of the instrument are shown as adjusted for this use in Fig. 1 of the drawing.

in order to prepare the instrument for use in inscribing a pair of parallel lines, the movable blade is drawn inwardly into inoperative position, as shown particularly in Fig. 2, after releasing the set screw 15 from its engagement with the said blade, and the blade is secured in its innermost, inoperative position, by the set screw. In this instance, the active extremities of the fixed blades 3 and et alone are in operative position, and these blades may be relatively adjusted in the manner previously described.

Then it is desired to inscribe a single line, the movable blade may be released and j moved outwardly into its outermost position,

as limited by the engagement of the inner end wall of the slot 18 with the adjacent end of the adjusting member 20, and it is secured in this position by means of the said screw.

able blade is thus projected past the active extremities of the fixed blades, so as to render the latter inoperative.

The active extremity 17 of the mov- From the foregoing description, taken in it should be apparent that we have provided and whose construction renders the same peculiarly efficient in operation, but it is to be understood that we do not necessarily limit ourselves to the exact details of construction, but may resort to minor changes j therein as found necessary in practice, witho-ut departing from the scope of the ,invention as covered by the appended claims.

1Having thus described our invention, what 1. A. device of the class described coinbody and having active free extremities disposed in transverse alinement, a longitudiblade may be secured in its different longiltudinally adjusted positions, means whereby the active extremities of the fixed blades may be adjusted relatively to each other, and means whereby the active extremity of the 4movable blade may be laterally adjusted with respect to the adjacent fixed blade.

2. A device of the class described comprising a body having a handle, a pair of ymarking blades provided on the, said body connection with the accompanying drawing, j

and having laterally yieldable, free extremities, an adjusting member' connecting the said blades for obtaining relative adjustment of the free extremities thereof, a third blade disposed adjacent to one of the first-named blades and having a laterally yieldable free extremity, and an adjusting member attached to the third blade and adjustably engaged with the adjusting member for the first-named blades whereby relative adjustment of the free extremity of the third blade with respect to the adjacent blade may be obtained without affecting the relative positions of the first-named blades with respect to each other.

3. A device of the class described comprising a body having a handle, a pair of marking blades provided upon said body and having laterally yieldable free extremities provided with alining openings, the opening in one blade being screw threaded, a hollow cylindrical adjusting member rotatably mounted within the said. blade openings and externally threaded adjacent to one end thereof for adjustable engagement within the threaded opening of the adjacent blade, a limiting head provided upon the opposite end of the said adjusting member for engagement with the4 outer face of the other blade, a second cylindrical adjusting member extending through the first adjusting member and engaged therewith for longitudinal adjustment, a third marking blade disposed in transverse alinement with the first named blades and having a laterally yieldable free extremity, the said blade being provided with an opening rotatably receiving the adjacent end of the second adjusting member, and means for preventing longitudinal movement of the said adjusting member with respect to the last named blade.

4. A device of the class described comprising a body having a handle, a pair of marking blades provided upon said body and having laterally yieldable free extremities provided with alining openings, the opening in one blade being screw threaded, a hollow, cylindrical` adjusting member rotatably mounted within the said blade openings and externally threaded adjacent to one end thereof for adjustable engagement within the threaded opening of the adjacent blade, a limiting head provided upon the opposite end of the said adjusting member for engagement with the outer face of the other blade, a second cylindrical adjusting member extending through the irst adjusting member and engaged therewith for longitudinal adjustment, a third, longitudinally adjustable marking blade provided upon the said body and having a longitudinal slot rotatably and slidably receiving the adjacent end of the second adjusting member, and limiting flanges provided upon the said adj usting member for engagement with the opposite side faces of the last-named blade.

5. A device of the class described comprising a body having a handle, a pair of marking blades provided upon the said body and having laterally yieldable free extremities, the said blades being provided with transversely alining openings, the opening in one blade being screw threaded, a hollow, cylindrical adjusting member rotatably mounted within the said blade openings and having one end portion thereof externally threaded for adjustable engagement within the said threaded opening of the adjacent blade, a limiting head provided upon the opposite end of the said adjusting member for engagement with the outer face of the other blade, the said adjusting member being internally threaded, a second, cylindrical adjusting member extending through the first adjusting member and having an enlarged threaded portion engaged with the internal threads of the first member, a third marking blade provided upon the said body and having a laterally yieldable free extremity, the last-named blade being provided with an opening rotatably receiving the adjacent end of the second adjusting member, and means for preventing lateral movement of the second adjusting member with respect to the last-named blade.

In testimony whereof we affix our signatures in presence of two witnesses.

JAMES A. KOEHL. ROBERT H. ROTHER.

lVitnesses for James A. Koehl:

DUDLEY B. HowAnD, BENNETT S. JONES. lVltnesses for Robert H. Rother:

SIMON GnlmNnnAUM, MAX OnLorr.

Copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

